e4d7abc0d4
The devicetree data structures have been available in more than just ramstage and romstage. In order to provide clearer and consistent semantics two new macros are provided: 1. DEVTREE_EARLY which is true when !ENV_RAMSTAGE 2. DEVTREE_CONST as a replacment for ROMSTAGE_CONST The ROMSTAGE_CONST attribute is used in the source code to mark the devicetree data structures as const in early stages even though it's not just romstage. Therefore, rename the attribute to DEVTREE_CONST as that's the actual usage. The only place where the usage was not devicetree related is console_loglevel, but the same name was used for consistency. Any stage that is not ramstage has the const C attribute applied when DEVTREE_CONST is used. Change-Id: Ibd51c2628dc8f68e0896974f7e4e7c8588d333ed Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://review.coreboot.org/19333 Tested-by: build bot (Jenkins) Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> Reviewed-by: Furquan Shaikh <furquan@google.com>
92 lines
3.5 KiB
C
92 lines
3.5 KiB
C
#ifndef DEVICE_RESOURCE_H
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#define DEVICE_RESOURCE_H
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#include <stdint.h>
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#include <stddef.h>
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#define IORESOURCE_BITS 0x000000ff /* Bus-specific bits */
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#define IORESOURCE_IO 0x00000100 /* Resource type */
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#define IORESOURCE_MEM 0x00000200
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#define IORESOURCE_IRQ 0x00000400
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#define IORESOURCE_DRQ 0x00000800
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#define IORESOURCE_TYPE_MASK (IORESOURCE_IO | IORESOURCE_MEM \
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| IORESOURCE_IRQ | IORESOURCE_DRQ)
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#define IORESOURCE_PREFETCH 0x00001000 /* No side effects */
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#define IORESOURCE_READONLY 0x00002000
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#define IORESOURCE_CACHEABLE 0x00004000
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#define IORESOURCE_RANGELENGTH 0x00008000
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#define IORESOURCE_SHADOWABLE 0x00010000
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#define IORESOURCE_BUS_HAS_VGA 0x00020000
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/* This resource filters all of the unclaimed transactions to the bus below. */
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#define IORESOURCE_SUBTRACTIVE 0x00040000
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/* The IO resource has a bus below it. */
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#define IORESOURCE_BRIDGE 0x00080000
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/* The resource needs to be reserved in the coreboot table */
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#define IORESOURCE_RESERVE 0x10000000
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/* The IO resource assignment has been stored in the device */
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#define IORESOURCE_STORED 0x20000000
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/* An IO resource that has been assigned a value */
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#define IORESOURCE_ASSIGNED 0x40000000
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/* An IO resource the allocator must not change */
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#define IORESOURCE_FIXED 0x80000000
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/* PCI specific resource bits (IORESOURCE_BITS) */
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#define IORESOURCE_PCI64 (1<<0) /* 64bit long pci resource */
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#define IORESOURCE_PCI_BRIDGE (1<<1) /* A bridge pci resource */
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typedef u64 resource_t;
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struct resource {
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resource_t base; /* Base address of the resource */
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resource_t size; /* Size of the resource */
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resource_t limit; /* Largest valid value base + size -1 */
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DEVTREE_CONST struct resource *next; /* Next resource in the list */
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unsigned long flags; /* Descriptions of the kind of resource */
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unsigned long index; /* Bus specific per device resource id */
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unsigned char align; /* Required alignment (log 2) of the resource */
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unsigned char gran; /* Granularity (log 2) of the resource */
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/* Alignment must be >= the granularity of the resource */
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};
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/* Macros to generate index values for resources */
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#define IOINDEX_SUBTRACTIVE(IDX, LINK) (0x10000000 + ((IDX) << 8) + LINK)
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#define IOINDEX_SUBTRACTIVE_LINK(IDX) (IDX & 0xff)
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#define IOINDEX(IDX, LINK) (((LINK) << 16) + IDX)
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#define IOINDEX_LINK(IDX) ((IDX & 0xf0000) >> 16)
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#define IOINDEX_IDX(IDX) (IDX & 0xffff)
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/* Generic resource helper functions */
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struct device;
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struct bus;
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extern void compact_resources(struct device *dev);
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extern struct resource *probe_resource(struct device *dev, unsigned int index);
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extern struct resource *new_resource(struct device *dev, unsigned int index);
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extern struct resource *find_resource(struct device *dev, unsigned int index);
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extern resource_t resource_end(struct resource *resource);
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extern resource_t resource_max(struct resource *resource);
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extern void report_resource_stored(struct device *dev,
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struct resource *resource, const char *comment);
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typedef void (*resource_search_t)(void *gp, struct device *dev,
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struct resource *res);
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extern void search_bus_resources(struct bus *bus,
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unsigned long type_mask, unsigned long type,
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resource_search_t search, void *gp);
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extern void search_global_resources(
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unsigned long type_mask, unsigned long type,
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resource_search_t search, void *gp);
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#define RESOURCE_TYPE_MAX 20
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extern const char *resource_type(struct resource *resource);
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static inline void *res2mmio(struct resource *res, unsigned long offset,
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unsigned long mask)
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{
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return (void *)(uintptr_t)((res->base + offset) & ~mask);
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}
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#endif /* DEVICE_RESOURCE_H */
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